flow ids with assignment

flow-id.lisp

;; So this code has an assignment (the `setq`) in a deep scope

(defshader test ()
  (let ((x 1))
    (v! x 0)
    (progn
      (let ((z 3))
	(setq x z)))
    (v! x 0 0 0)))

;; here we can see the flow-ids the analyzer gave the values used in the two vector constructors
;; e.g. (v! x y z w)

(V! 506 507)
(V! 509 510 511 522)

;; and we can see that even though the first arg of both calls is x they have different flow ids

;; whereas without the set you get

(defshader test ()
  (let ((x 1))
    (v! x 0)
    (progn
      (let ((z 3))
	x))
    (v! x 0 0 0)))

;; and you can see you have the same flow id for the first arg in both cases

(V! 514 515)
(V! 514 518 519 520)